Machine for dressing rived staves



(No Model.) v 2"Sheets-Sheet 1.

A. M. BENSON. MACHINE POR DRESSING RIVED S'IAVES.

No. 502,271. y y I Patented Aug.. l, 1893.

in-.. [lf.; I

2Y SheetsSheet 2.

(No Model?) l A; M. BENSON.,

MAGHINBFOR DRESSING RIVED STAVBS;

Pateted Aug. 1, 1893,

WITNESSES:

I fr@ l 5o that the staves NiTnD STATES PATENT erica,

ARZA M. BENSON, OF CLEVELAND, OHIO.

MACHINE FOR DRESSING RIVED STAVES.'

SPECIFICATION forming part of Letters Patent No. 502,271, dated August.1, 18.93.

Application iiled December 5, 1892. Serial No. 454.032. (No model.)

.To all whom it may concern:

Be it known that I, ARZA M. BENSON, a citizen of the United States, anda resident of Cleveland, county of Cuyahoga, and State of Ohio, haveinvented certain new and useful Improvements in Machines for DressingRived Staves, of which the following is a specification, the principleof the invention being herein explained and the best mode in which Ihave contemplated applying that principle so as to distinguish it fromother inventions. y

The annexed drawings and the following description set forth in detailone mechanical form embodying construction being but one of variousmechanical forms in which the principle ofthe invention may be used. i

In said annexed drawings-Figure I, represents a perspective View of myimproved machine for dressing rived staves; Fig. II, a perspective viewof the adjustable head; Fig. III, a top plan View of said head and theadjoining portion of the stave trough; Fig. IV, a front elevation of thehead, showing the rollers indicated by dotted lines, and showing thestave in section; Fig. V, a similar view of the same parts, illustratinghow the stave will be acted upon by considerably curved knives in amachine not provided with my improvement;v Fig. VI, a front view of thehead provided with rollers adapted for redressing staves; Fig. VII, ahorizontal section of the knife and rest for this form of head, and Fig.VIII, a view of the end of the rived stave, illustrating, by dottedlines, the manner in which the stave will be dressed by nearly straightknives; by curved knives in a machine provided with my improvement, andby curved knives in a machine not provided with my improvement.

My present improvements are principally intended for the machine fordressing rived staves for which Letters Patent No. 210,444 were grantedto me on the 31st day of December, A. D. 1878. I

Staves for tight barrelsor similar packages are usually formed by rivingor radially splitting logs or sticks of wood in such manner, will allcenter at the heart of the log or stick, and will have narrower edges inend view, by Fig. In dressing such rived staves it is desirable theinvention; such detail4 at the heart portion than at the sap portion. Astave rived in this manner is illustrated, VIII of the drawings.

to cut away as little as possible from the heart portion of the stave,and to do all trimming, required to shape the stave, at the sap portion.

The machine disclosed in my above mentioned patent was constructed todress staves of one style and size. Whenever it was necessary to changethe shape of the knives, the head had to be removed from the machine,and another he'ad,-with other knives, and with the guide rollers andother parts suitably arrangedV for said knives,-l1ad to be put in theplace of the removed head. Such change consumed considerable time, andit was necessary to have on hand a large number of heads if it was chinefor a variety of shapes and sizes of staves. The necessity for the abovementioned changes in my patented machine, is clearly demonstrated inFigs. V and VIII.

The dotted lines 1, in Fig. VIII, indicate the extent of trimmingnecessary invmaking staves for pipes, hogsheads, or similar largepackages,the staves for such work being straight or nearly straight incross section.

When a machine constructed according to my above mentioned patent, wasso adjusted, for cutting such staves, andthe knives of such machineshould be removed and knives ot a greater curve be substituted, thestave would b e dressed such as indicated by 2, in Fig. VIII, and suchas shown in Fig. V. y The curved knives would strike the stave in suchmanner that the outside ofthe stavewould be dressed into the heartportion as well as into the sapportion; necessitatingr-when the stavewas inished,the removal of as much of the heart portion as of the sapportion; which would cause considerable loss of stock, and produce verynarrow staves.

The dotted lines 3, in Figs. VIII and IV, illustrate the desirablemanner of dressing the stave. The heart edge of the stave is left almostuntouched, and all the trimming is done upon the sap portion. This kindof dressing cannot, however,.be carried out unless the rollers andknives are set toone side desired to use one map ICO of the stavetrough, through which the stave is forced by the reciprocating rammer ofthe machine.

The general appearance and the operation of my improved machine aresubstantially the salue as of the machine disclosed by my abovementioned Letters Patent, and the description of the construction andgeneral operation of this, my improved machine, need not be veryelaborate, as reference to my patent will clearly set forth suchconstruction and operation. Ishall therefore briey mention the oldelements of the machine, without comment as to details or operation ofsuch old elements. The bed frame A, has a longitudinal stave trough, A',in which the stave to be dressed slides,- and the ram merB,slides insaid trough upon the pivoted bed C. The bed is raised by the foot leverC', which has a trigger, C2. The rammel', which has a cogged rack, b,has the chain and weight B and B2, and has the trip h', and the lateralprojecting lug, b2, which strikes and engages the spring D, which givesthe rammer the start for its return stroke. A pinion, e, meshes with thecogged rack, and is secured upon the shaft of the larger cog wheel, E,which meshes with the pinion,f, upon the shaft of the drive pulley F.All of these elements are of substantially the same construction andoperate in substantially the same manner as the corresponding parts ofmy above referredto, patented machine. The head Cla-which in generaloutlines is substantially like the head of my patented machina-has atransverse groove, g, in its under side, and has said groove fitting andsliding upon a transverse tongue, a,upon the frame of the machine.Brackets, a', project from the frame, at both sides of the head; and setscrews, a2, pass through said brackets and bear with their inner endsagainst the sides of the head. By means of this tongue and groovearrangement, and the set screws, the head may be laterally adjustedrelatively to the stave trough. The curved knives Il, which dress thestaves, are secured, at their upper and lower ends, to blocks H', andllihaving washers interposed between them to adjust their relativedistances. Said blocks have pivotal supportin the head to allow them toswing in a horizontal plane. The upper block I- has two rearwardlyprojectinghooks, h, which are engaged by arms, h', projecting from arock shaft, h2, transversely journaled in the upper portion of the head;and one end of said rock shaft has a rearwardly projecting arm, h3, tothe end of which a rod, 7a4, is attached,said rod having a weight, h5,attached to its lower end. Bell-crank arms, I', are pivoted upon theupper block l-l', and have links, z', connected to their inwardlyprojecting arms. A rock shaft, l2, is journaled in the upper portion ofthe head and has an upwardly projecting arm, I3, to which said links areattached, and a rearwardly projecting arm, I4, to which a rod, z', isattached; said rod having a spring, l5, attached to its lower end bymeans of which spring the belLerank arms may have their outer ends drawntogether. The outer bell-cran k arms have adjusting screws, 112, whichproject inward and bear with their ends against a web, 7a", upon theupper block ll'; and saidadjustingserews serve to adjust the degree ofproximltyof the outer bell-crank arms. Arms, J, are p1voted to the lowerblock 112, and have eyebolts,j, adjustably secured through lips, .7 upontheir under sides. Chains, J', are scoured to said eye-bolts and arecarried over pulleys, k7, upon the lower block. The lower Vends of saidchains are adjustably connected to a strong spring, J2, which thusserves to draw the outer ends of said pivoted `arms J together. Shafts,K, are movably secured,at

their upper and lower ends, in the outer ends of the two sets or pairsof spring-actuated arms; and guide rollers, K', arej ournaled upon saidshafts. A bar, L, is secured,-trans versely adjustable in its relationto the guide trough-in front of the lower pivoted arms, and has aprojecting tongue, l, which extends between the ends of said lowerpivoted arms. Said bar L is formed with two slots, Z', through whichpass bolts, Z2, into the bed frame of the machine; and said slots serveto guide the bar in its adjustment, transversely to the stave trough,The ends of the bar L are bent downward to form ears, Z, through whichpass adj ustin g screws, Z4, which bear against the sidesof the guidetrough, so that the bar may be adjusted, transversely to the guidetrough, by means of said screws. The tongue Z acts as a stop for thelower pivoted arms, and serves to keep the lower ends of the guiderollers K' in their proper position relatively to the knives, when saidrollers are drawn together by their spring.

The operation of all of the parts, above described, is the same as inthe machine eonstrueted according to my above referred-to patent; withthe exception of the operation of the two new features, viz.-thetransversely adjustable head and the transvcrsel y adjustable bar andtongue. As above set forth, when the knives are changed in the machinefrom a less curve to a greater curve, the position of the head andknives relative to the stave trough is such, that the stave will beforced between the knives as disclosed by Fig. V. This position willcause the stave to be trimmed at the heart edge as well as at the sapedge, and it is therefore necessary to bring the guide rollers in suchposition relative to the knives, that they will guide the stave with theupper `heart edge directly between the knives, as shown in Fig. IV. Toaccomplish this adjustment, the eyebolts of one of the lower pivotedarms is lengthened so as toallow a greater play for said arm, and thebar L is transversely adjusted so as to bring the guide rollers inposition to properly guide the stave between the knives. This, however,swings the knives and the rollers to TOO one side, and would canse theknives to gouge the stave at the end as it passes through the knives;and it is therefore necessary to adjust the head transversely to thestave trough so as to bring the stave dressing mechanism in properalignment with the stave trough. This can be done with my improvedadjustable head; and my machina-provided with this improved adjustment,-can Itherefore be used with knives of various curves withoutthe necessity of removing the head and substituting another.

It sometimes becomes necessary to redress staves which are either toorough, or are otherwise unsuitable for use in their present condition.This is especially necessary with staves intended for whisky-barrels,which are expected to have aneat outward finish. As such staves areheavier than oil-barrel staves, an improperly dressed whisky-barrelstave may be redressed for use as an oil-barrel stave.

When I desire to redress staves in my ma-` plane cylindrical rollerschine, I remove the and substitute a convex roller to bear against theinner concave side of the stave, and a concave roller to bear againstthe outer convex side of the stave; and I substitute a rest,- such asillustrated in horizontal section in Fig. VIL-instead of the convexknife. This rest,- Which is lettered II3,is shaped exactly like theknife, with the exception that-,beyond the point where the knife edgewould be, the stave rest is formed with an outwardly curved bead, hs.

In operation, the stave is forced between the rollers, and knife andrest, in the same manner as when dressingthe stave, but the outside,only, will be dressed off; whereby a nice finish for the outside of thestave is attained. The head and transversely adjustable bar are suitablyadjusted when this improvement is used, so as to bring the rollers andknife and rest in their proper relative position to the stave trough.

Other modes of applying the princi ple of my invention maybe employedfor the mode herein explained. Change may therefore be made as regardsthe mechanism thus disclosed, provided the principles of constructionset forth respectively in the following claims are employed.

I therefore partcula ly point ont and distinctly claim as my inventionl.In a machine for dressing rived staves, the combination of a stavetrough, dressing knives, and guide rollers for said knives,-

two of said elements being adjustable in trans verse alignmentrelatively to the third element, substantially as set'forth.

2. In a machine for dressing rived staves, the combination of a stavetrough, ahead carrying the dressing knives and provided with means fortransversely adjusting it relatively to said stave trough, guide rollerspivotally supported upon said head, and a stop for said rollers andbetween the same,-said stop having means for adj ustingit transverselyto the I stave trough, substantially as set forth.

3. In a machine for dressing rived staves, the combination of the bedframe provided with a transverse tongue,ahead carrying the dressingknives and formed with a groove sliding upon said tongue, adjustingscrews bearing against the sides of said head, guide rollers pivotallysupported from said head, a bar transversely supported upon the frameand provided with a tongue projecting between the pivoted supports forsaid rollers,

and adjusting screws for transversely adjusting said bar upon the frame,substantially as set forth. l

4. In a machine for dressing rived staves, a concave curved knife fordressing the outer side of a'stave, and a convex curved rest forsupporting the inner side of the stave, said rest having an outwardlycurved bead projecting edge, substantially as set forth.

In testimony that I claim the foregoing to be my invention I havehereunto set my hand this 2d day of December, A. D. 1892.

ARZA M. BENSON.

Witnesses:

J. B. FAY, WM. SECHER.

beyond the point opposite the knife`

